Submission #1167186

#	Time	Username	Problem	Language	Result	Execution time	Memory
1167186		SmuggingSpun	Cloud Computing (CEOI18_clo)	C++20	0 / 100	3094 ms	328 KiB

clo

#include<bits/stdc++.h>
#define taskname "A"
using namespace std;
typedef long long ll;
template<class T>void maximize(T& a, T b){
    if(a < b){
        a = b;
    }
}
const int lim = 2e3 + 5;
const ll INF = 1e18;
struct Data{
    int c, f, v;
    bool operator <(const Data& other){
        return this->f < other.f;
    }
};
int n, m;
Data a[lim], b[lim];
namespace sub1{
    void solve(){
        ll ans = 0;
        vector<ll>dp;
        for(int mask = (1 << n) - 1; mask > 0; mask--){
            ll cost = 0;
            vector<int>core(1, -1);
            for(int i = 0; i < n; i++){
                if(1 << i & mask){
                    cost += a[i + 1].v;
                    for(int j = a[i + 1].c; j > 0; j--){
                        core.emplace_back(a[i + 1].f);
                    }
                }
            }
            int N = core.size();
            dp.assign(N, 0);
            for(int i = 1; i <= m; i++){
                for(int j = N - 1; j >= b[i].c && core[j - b[i].c + 1] >= b[i].f; j--){
                    maximize(dp[j], dp[j - b[i].c] + b[i].v);
                }
            }
            maximize(ans, *max_element(dp.begin(), dp.end()) - cost);
        }
        cout << ans;
    }
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> a[i].c >> a[i].f >> a[i].v;
    }
    cin >> m;
    for(int i = 1; i <= m; i++){
        cin >> b[i].c >> b[i].f >> b[i].v;
    }
    sort(a + 1, a + n + 1);
    sort(b + 1, b + m + 1);
    if(n <= 15){
        sub1::solve();
    }
}

Compilation message (stderr)

clo.cpp: In function 'int main()':
clo.cpp:50:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |                 freopen(taskname".inp", "r", stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 18
• Subtask 2: 0 / 18
• Subtask 3: 0 / 18
• Subtask 4: 0 / 18
• Subtask 5: 0 / 18
• Subtask 6: 0 / 10